New sliders and belt, now scoot revs high! By foretwoone (Read 2,163 times)

[foretwoone]

So i got around to putting in my 12g sliders and Gates Kevlar 842 belt last night. I know my original weights were 14g, confirmed by a jewelers scale. The acceleration was great, but at 35mph i was pushing 8000rpms. I then double checked the orientation of the sliders and they are correct. The only other changes made at the same time was the addition of a UNI filter. Now i just got my Prodigy Variator, A9 cam, and 15/37 gears which i was going to do tonight, however i dont want to do anything until i fix the problem at hand.

Is it possible i overtorqued the drive plate on and squeezed the belt so it cant ride up the variator?

[Cruiser]

If the belt was wedged, it would come out as soon as you started your engine and you would end up with a loose variator. The 2 gram drop in weight should make almost no difference in top speed considering you went with sliders. Sliders can be tricky to put in because of their odd shape. I would recheck the weights on a scale and really study the install instructions to make sure the weights are oriented correctly.

[Alleyoop]

Well your RPMS will be higher with the 12G Sliders about 600 rpms higher than with the 14g rollers. The lighter you go the Higher Rpms the Heavier you go the Lower the Rpms.
Alleyoop

[foretwoone]

Any chance this could be a sign of needing a higher jet from the Uni filter? The amount of increase in rpms is not even close to proportional to what it should be. Now if, as you mentioned the variator were loose due to a wedged belt it would not push out and the belt might not ride up. Now that I have the new variator I might try the weights on that.

[robb]

I think it is normal for a new belt to cause you to rev a little higher untill it wears in and you also put in lighter vari weights at the same time. I'd put the old belt back on to test if that is the case. As for the higher jet? Look at your plug and see what it tells you. My 2 cents.

[ce]

The problem is the sliders are too light, only 72 grams. Your rollers were 84 grams.

Try for 78 grams by mixing 3 12s and 3 14s

[foretwoone]

Its late here(12am) but i just finished putting in the prodigy variator. I do have one complaint about it, the ramp is very tight. My stock ramp slides on and off like nothings there but this one binds and i have to pull it off the variator. I'll test it in the AM but my instinct tells me its going in the trash. If the weights cant push it out because its binding then it will never open up.

[Cruiser]

Once the ramp plate is installed, it does not move. It is held in place by the drive pulley collar or the big bushing that the variator nut tightens against.

mpsracing.net/helix-manual/08-07.html

[foretwoone]

I understand the ramp technically doesnt move, its the drive face of the variator that moves away from the ramp. Either way there is friction there making it difficult to separate the variator from the ramp plate.

[Cruiser]

The ramp does not move once it is installed. Some ramps fit tighter than others. You can use a dremel to grind out the hole of the ramp for easier assembly.

I had to use a three jaw puller to pull off my ramp plate last time I removed my variator.

[dyoung1167]

double and triple check how you installed the sliders, i thought i got it right the first time, but i did not and got exactly the same problem you are having.
www.scrappydogscooters.com/images/slider-installation.jpg
in the pick both ends look the same but the thinner flat end is up, with the rounded surface in the drive plate

[foretwoone]

Rode to work this morning, however i put the stock airbox in first. Acceleration was great, maintains about 7100rpms through 50mph. Toped it out at 63mph on a long stretch. Im hoping with the 15/37 gears to be able to get up to 70 without losing too much bottom end power, we'll see.

[sprocket]

Doubt you will make 70 mph... more like 66mph and that is on the China meter so it is probably closer to 62 mph GPS

[foretwoone]

The china meter is ticking me off, seriously i feel like im going 50 when im going 40 on the china meter. Gunna borrow a friends gps to check it. I know on bikes it always feels faster, but even on my klr, 40 felt like 40, not 50!

[sprocket]

Or buy one of these...seriously accurate...

trailtech.net/vapor.html

I have no connection with the company etc.. They are just a great aftermarket product...